#include <iostream>

using namespace std;
typedef int ElemType;
typedef struct DulNode{
    ElemType data;
    struct DulNode * prior;
    struct DulNode * next;
}DulNode,*DuLinkList;

enum Status{
    OK = 10,ERROR
};

int main(void){

    cout << "Hello World!" << endl;
    return 0;
}

Status insertList(DuLinkList list,int i,ElemType){
    while()
}
